MichaelMeissner

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    • MichaelMeissner
      I was curious. I didn't know what the board was so I went to tindie.com and found the entry. On a hunch, I went over to the PCB manufacturing company oshpark.com and I looked for grbiHAL, and I think I found two boards, one for the Teensy 4.0...
    • MichaelMeissner
      I don't know, you would have to test it out. Off hand, I imagine that using MTP in the background could affect latency, but who knows. I imagine that when you are transferring files, you are not worried as much about latency, and it won't...
    • MichaelMeissner
      I must admit to not really understanding why you are doing this. Is it a one time operation, or will you need to do this regularly? Can you turn off the Teensy or must the Teensy be running? To me if it is a one time task, the simplest...
    • MichaelMeissner
      MichaelMeissner replied to the thread Teensyduino 1.60 Beta #4.
      FWIW, I had previously had had arduino-ide_2.2.1_Linux_64bit installed on my Fedora 41 system. I removed the Teensy port, and then I replaced the Teensy json file with the update. I could not get 2.2.1 to show Teensy after doing control-shift-P...
    • MichaelMeissner
      Before the Teensy 4.1 was released, there were a lot of people making PCBs to bring out the SD card and other pins: OSH park PCB of trainer4edu's PCB without USB host OSH park PCB of trainer4edu's PCB with USB host Trainer4edu's board...
    • MichaelMeissner
      If you are using the Teensy 4.0, one possibility is to get the Adafruit Teensy 3.x feather adapter. I'm putting the Adafruit link along with a compatibility page I wrote for the old unofficial Teensy wiki site: Adafruit Teensy 3.x feather...
    • MichaelMeissner
      Majority of them are postal return. Some have extra solder on the bottom, usually on the 4 slots that hold the USB connector (very likely the USB connector didn't seat properly during reflow soldering and it got some manual rework). A few might...
    • MichaelMeissner
      I'm curious what are likely 'cosmetic' flaws in the 'LEFTOVER_TEENSY_OTHER' item? I mean I will find out eventually when my grab bag gets here. I realize it is a grab bag, and it could be anything, but I was wondering what kind of things were...
    • MichaelMeissner
      Next week PJRC will have a Leftover Teensy Stuff sale, now that SparkFun is manufacturing all Teensy boards. Teensy 4.0 with pins soldered crooked (but fully functional) at half price will come with a free grab bag of other leftover stuff. USA...
    • MichaelMeissner
      The leftover stuff sale is live. https://www.pjrc.com/store/leftover_stuff_sale.html
    • MichaelMeissner
      Cards that are 32GB or smaller are formatted with FAT32 and typically have the VFAT support on top of FAT32 (VFAT adds support for names other than the 8+3 uppercase). Cards that are 64GB or larger are formatted with ExFat.
    • MichaelMeissner
      It is with dismay that I see this news, just as I was about to launch a product line, based on the Teensy hardware! My relationship with SparkFun is extremely negative, to say the least; five years ago, my (crooked) business partner, without my...
    • MichaelMeissner
      MichaelMeissner replied to the thread Using RAM1 & RAM2.
      Thanks, fixed. I forgot to hit ^C to save the html link when I did ^V in the url box, it grabbed the previous text.
    • MichaelMeissner
      MichaelMeissner replied to the thread Using RAM1 & RAM2.
      Well it is free until your program is running. When you call malloc/new, it allocates out of RAM2. For static/global variables you can use 'DMAMEM' and the variable is put into MEM2. Note, these variables cannot be initialized. I don't recall...
    • MichaelMeissner
      MichaelMeissner replied to the thread Using RAM1 & RAM2.
      Well in addition to the RAM1 and RAM2 normally that comes with the Teensy 4.1, you have the option to solder 1-2 memory chips to the Teensy. You can solder 1 or 2 PSram chips You can solder 1 flash memory chip You can solder 1 flash memory chip...
    • MichaelMeissner
      I've been idly wondering whether Adafruit will continue to sell Teensies. Now, I realize that Adafruit sells some Sparkfun things, and Sparkfun sells some Adafruit things, and they address different markets. But the change of the supplier may...
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